Multi-spectral camera shooting apparatus

Abstract

The invention provides a multi-spectral camera shooting apparatus. The multi-spectral camera shooting apparatus comprises a pixel array, wherein the pixel array comprises multiple pixels which are arranged periodically and repeatedly; each pixel at least comprises a first sub pixel and a second sub pixel; each sub pixel at least comprises an infrared photoelectric conversion layer, a visible photoelectric conversion layer and a color filter sheet layer, wherein the infrared photoelectric conversion layer is used for near infrared photoelectric conversion; the visible photoelectric conversion layer is used for visible light photoelectric conversion; the color filter sheet layer is used for selectively passing through light rays within a specific spectral range; the visible photoelectric conversion layer is positioned between the infrared photoelectric conversion layer and the color filter sheet layer, wherein the conversion efficiency of the infrared photoelectric conversion layer of the first sub pixel is higher than that of the infrared photoelectric conversion layer of the second sub pixel; and the infrared light transmittance of the color filter sheet layer of the first sub pixel is higher than that of the color filter sheet layer of the second sub pixel. By virtue of the multi-spectral camera shooting apparatus provided by the invention, the multi-spectral camera shooting within a wide dynamic range is realized.

Description

technical field [0001] The invention relates to the field of medical auxiliary equipment, in particular to a multispectral camera device. Background technique [0002] The structures and tissues inside the human body cannot be directly seen by the human eye. It is difficult to accurately find and locate the subcutaneous internal structure and tissue only relying on the external contour of the human body and the knowledge of human anatomy. [0003] Human blood vessels are hidden under the epidermis, often blocked by subcutaneous fat or even bones, and the image signal is extremely weak in a visible light environment, or even completely invisible to the human eye. Although before puncture, doctors often ask patients to clench their fists or pat the skin at the puncture site to make blood vessels more visible, but depending on factors such as the age of the patient and the thickness of subcutaneous fat, the visibility of subcutaneous blood vessels is still not ideal. Accordin...

AI Technical Summary

Problems solved by technology

In order to obtain a signal strength higher than the background noise and the electronic noise of the detection system itself, increasing the intensity of the infrared illumination is a common method, but this will bring a more intense background scattered infrared light, which may quickly make the image detection device Saturated and unable to detect the signal properly or out of the linear response region

Improving the sensitivity of the detection unit to infrared light can suppress system noise and improve the signal-to-noise ratio, but increasing the sensitivity of the detection unit will also cause the storage capacity of the detection unit to reach saturation faster and cannot continue to detect signals or break away from the linear response region

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